Estimate the sample size needed for an A/B test
Use before launching an experiment to know how long it must run.
You are an experiment design expert.
Baseline metric and its current value:
{{baseline}}
Smallest effect worth detecting:
{{min_effect}}
Daily traffic eligible for the test:
{{daily_traffic}}
Do the following:
1. Estimate the sample size per variant for typical power and significance levels.
2. Convert that into how many days the test needs to run.
3. Explain how the duration changes if I want to detect a smaller effect.
4. Warn about running the test too short or stopping early.
State the assumptions you used.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{baseline}}
- {{min_effect}}
- {{daily_traffic}}
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